在Groovy中，什么时候使用Expando与'as'运算符和闭包有什么意义呢？(In Groovy, When Does It Makes Sense To Use An Expando vs the 'as' operator and Closures?)

 与@ Chitoge的解决方案几乎相同， 
 
 但为了匹配您的预期输出，这是我的解决方案 
 
d={'foo': 10,'bar': 12,'asd': 4}
key_list = []
key_index = []
for k,v in d.iteritems():
    if v<=10: 
        key_list.append(k)
        key_index.append(d.keys().index(k) + 1)

print key_list
print key_index

almost same as @Chitoge's solution,
 
but in order to match your expected output, here is my solution
 
d={'foo': 10,'bar': 12,'asd': 4}
key_list = []
key_index = []
for k,v in d.iteritems():
    if v<=10: 
        key_list.append(k)
        key_index.append(d.keys().index(k) + 1)

print key_list
print key_index